Patent US4714639A successfully refreshed from Google Patents.
US4714639A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods and materials for thermoelectric and light-heat conversion
Assignee: Sharp Corp
•
Filing: 1986-03-20
•
Granted: 1987-12-22
•
Expires: 2006-03-20
Abstract
Abstract The disclosure is directed to a method for converting between heat energy and electric energy which is characterized in that a carbon intercalation compound is employed as a thermoelectric material by utilizing a temperature difference in a direction perpendicular to the structure of carbon layers, or a method for producing a light-heat converting material which is characterized in that a thin metallic layer like a translucent mirror is caused to adhere to the inner surface of a light transmissive hollow tube by pyrolytically decomposing at a temperature approximately below 1000° C., with hydrocarbons being introduced into the hollow tube at the rate of a predetermined amount per hour.
Inventors
- 👤 Yoshiyuki Higashigaki
- 👤 Yoshikazu Yoshimoto
- 👤 Tomonari Suzuki
- 👤 Shigeo Nakajima
- 👤 Toshio Inoguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:11
CPC Classifications
H; H10; H10N; H10N10/00; H10N10/80; H10N10/85; H10N10/851; H10N10/855; H10N10/01; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/13; Y10T428/131; Y10T428/1317
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
39 words
A material capable of converting light energy into heat energy comprising a hollow light transmissive member having a thin carbon layer adhered to the inner surface of the hollow member, said layer having a translucent mirror metallic luster characteristic.
Claim 2
Dependent Claim
39 words
A material capable of converting light energy into heat energy comprising a hollow light transmissive member having a thin carbon layer adhered to the inner surface of the hollow member, said layer having a translucent mirror metallic luster characteristic.
Claim 3
Dependent Claim
19 words
The material of claim 1, in which the layer is of an even thickness of 0.05 to 0.13 micrometer.
Claim 4
Dependent Claim
13 words
The material of claim 2, in which the even thickness is 0.08 micrometer.
Claim 5
Dependent Claim
14 words
The material of claim 1, in which the hollow member is a hollow tube.
Claim 6
Dependent Claim
16 words
The material of claim 1, in which the hollow member is a quartz glass reaction tube.
Claim 7
Independent Claim
76 words
A method for producing a material capable of converting light energy into heat energy comprising: introducing a hydrocarbon or a heterocyclic compound into a hollow light transmissive member at the rate of a predetermined amount per hour, pyrolytically decomposing said hydrocarbon or said heterocyclic compound at a temperature of approximately below 1000° C., and forming a thin carbon layer onto the inner surface of said hollow member, said layer having a translucent mirror metallic luster characteristic.
Claim 8
Independent Claim
76 words
A method for producing a material capable of converting light energy into heat energy comprising: introducing a hydrocarbon or a heterocyclic compound into a hollow light transmissive member at the rate of a predetermined amount per hour, pyrolytically decomposing said hydrocarbon or said heterocyclic compound at a temperature of approximately below 1000° C., and forming a thin carbon layer onto the inner surface of said hollow member, said layer having a translucent mirror metallic luster characteristic.
Claim 9
Dependent Claim
20 words
The method of claim 6, in which the layer formed is of an even thickness of 0.05 to 0.13 micrometer
Claim 10
Dependent Claim
13 words
The method of claim 7, in which the even thickness is 0.08 micrometer.
Claim 11
Dependent Claim
14 words
The method of claim 6, in which the hollow member is a hollow tube.
Claim 12
Dependent Claim
16 words
The method of claim 6, in which the hollow member is a quartz glass reaction tube.
Claim 13
Dependent Claim
11 words
The method of claim 6, in which the hydrocarbon is introduced.
Claim 14
Dependent Claim
19 words
The method of claim 11, in which the hydrocarbon is selected from benzene, anthracene, n-hexane, cyclohexane, biphenyl or acetylene.
Claim 15
Dependent Claim
12 words
The method of claim 6, in which a heterocyclic compound is introduced.
Claim 16
Dependent Claim
12 words
The method of claim 13, in which the heterocyclic compound is pyridine.
References Cited (Backward Citations)
US4009323A
Cited
US4403028A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-12-21 | 1991-06-22 | 1991-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-21 | 1995-06-22 | 1995-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-21 | 1999-06-22 | 1999-12-22 | $7700.00 | Window Closed / Lapsed |